Pressure Relief Vertical Mount 3510-16 Specialty Products Fan shaped 1/2" spaced louvers

Fan shaped 1/2" spaced louvers

Holds up to 1" filter (not included)

* 2650 - Round spring actuated (6) damper for vertical or horizontal mount

Fixed bars with 0° deflection

Pressure Relief Vertical Mount 3510-16 Specialty Products Fan shaped 1/2" spaced louversh3. Standard Features * 3510 Vertical mount * 3520 Horizontal mount air up * 3530 Horizontal mount air down * Designed to open with negative or positive pressures for intake or exhaust air * Felt edge blades to hold noise to a minimum * Aluminum construction * Blade to blade linkage * 1 4" pivot pins in nylon busings * Maximum size 24 x 24 * Mill finish h3. Options * Sleeve variations * Mounting flange * Adjustable counter balance to adjust various